Pipe-cover.



S. SCHMAUS,

PIPE COVER.

APPLICATION FILED MAY 14, 1914.

1,2%3,6D Patented Apr. 24,1917.

ET PAT SIMON SCHMAUS, OF BUFFALO, NEW YORK, ASSIGNOR OF ONE-HALF TO CHARLES J". DUDLEY, OF NORTH TONAWANDA, NEW YORK.

PIPE-COVER.

Specification of Letters Patent.

Patented Apr. 24, 1917.

To all whom it may concern:

Be it known that I, SIMON SCHMAUS, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Pipe-Covers, of which the following is a specification.

My invention relates to pipe covers and. more particularly to that class of covers used for covering steam pipes laid underground.

Covors for this purpose are usually con structed of wood built up with staves and provided with slip-joints.

Covers thus constructed for large pipes are exceedingly heavy and difficult to place over the pipes, the staves being from 4 to 6 inches thick, and when delivered to the place of their application to the pipes, invariably lie about and are subjected to the elements of the weather, causing them to swell under certain conditions and shrink under others so that it becomes an extremely difficult task to connect the sections, not only on account of the weight of the same when watersoaked, as sometimes occurs, but also due to the fact that the slip-joints cannot be properly mated. When exposed to the sun or subjected to dry weather conditions, the wood quickly shrinks and warps, cauging the staves to split and also separate at the seams. Under such conditions the slipjoints or mortise and tenon ends, as they are sometimes termed, fit loosely. These conditions are also caused after the covering is applied to thesteam pipes and buried in the soil, by reason of the heat of the steam pipes drying the wood. This permits a large percentage of theheat to escape and also causes undue condensation of steam.

It is the primary object of my invention to produce a cover for this purpose in which the above mentioned objections are entirely obviated and at the same time providing a cover which, from exterior appearance, appears to be constructed exactly like the common wood stave covers now so generally in use.

My invention also has for its object the production of a cover of this type which is inexpensive, durable, comparatively light in weight, and moisture proof, and which in the main can be constructed with inexperienced labor.

ordinary stave covering, yet be considerably lighter than the latter.

Another object of my invention is the utilization of a pulp or other plastic substance within a thin wooden layer formed of staves built up into cylindrical form, the slaves being comparatively thin so as to assure a saving of wood in the construction of the covering; the pulp or other plastic sub stance being much cheaper than wood, considerably lighter and fully as good a nonconductor of heat.

Another object of my invention is to provide a covering having a wooden layer formed of thin staves combined with an adj acent interior layer of pulp or other plastic material for which said thin wooden staves serve as a mold when compressing the pulp or other plastic material into shape.

Further objects are, the production of a non-metallic sectional covering provided with metallic end connectors; to so constructsaid connectors that they are readily applied to a built-up portion of the section preparatory to molding or compressing the pulp or plastic body portion to the desired cylinclrical formation.

Still further objects are to provide quickacting connections between the sections; and to otherwise improve on coverings of this type now in use.

To these ends my invention consists in a cover for steam or other pipes formed of sections, each section having an exterior member formed of comparatively thin wooden staves and a pulp body portion molded into position against the interior surface of said exterior member to the end that said exterior member serves as a mold for the pulp body portion and is retained as a portion of the pipe covering.

The invention also consists in a covering having a wooden exterior member, an asbestos interior member, and a pulp or other plastic intermediate member.

The invention further consists in a builtup cylindrical exterior wooden memberhaving metallic connector membersapphed to opposite ends, a pulp body portion molded into said exterior member and in which the metallic connecting members are partly embedded.

The invention further consists in the novel featuresof construction and in the arrange ment and combination of parts to be hereinafter described and more particularly point ed out in the subjoined claims.

In the drawing,

Figure l is a side elevation of a steam or other pipe having my improved pipe coi'er applied thereto.

Fig. 2 is a side elevation of a portion of the covering showing the steam pipe extending from one end thereof and showing also the superposed layers of material from which it is constructed.

Fig. 3 is a longitudinal section taken on line 33, Fig. 2, the successive exterior layers being broken away at shorter lengths to better illustrate the construction of the cover.

Fig. 4 is a cross section taken on line 41 l, Fig. 3.

Fig. 5 is a detached perspective view of the male connector member.

Fig. 6 is a detached perspective view of the female connector member.

Fig. 7 is a sectional perspective view of one end of the exterior member of a section of the coverin Like numerals of reference refer to like parts in the several figures of the drawings.

The reference numeral 10 designates a steam, hot water, or other pipe which it is desired to cover to prevent escape of heat; to prevent corrosion; or for any other purpose, and 11 designates the cover sections which surround the pipe and are connected by quick-acting connectors to be hereinafter described.

The pipe covering is constructed in sections of the desired lengths, and each section comprises an exterior member 12 which is preferably cylindrical in cross section and formed of thin wooden staves 13 suitably banded by wiresl l so as to retain said exterior member in cylindrical form, the wires being wound spirally around the same and stapled to the staves, as best shown in Fig. 2, but any other retaining means may be employed for this purpose.

The interior of this exterior wooden memher is provided with a plurality of circumferential grooves or depressions 15 and near each end a comparatively narrow circumferential groove 16 is formed from which extend notches 17, the notches terminating at the extremities of the exterior member, or short of the extremities, as best shown in Fig. 7. The bore of this exterior wooden member is flared at opposite ends, as at 18,

to facilitate the construction of the cover 1 and the assembling of parts thereof.

'19 and 20 designate the metallic connector members, which may be termed, respectively, male and female members, said connector members being applied to opposite ends of each section. The male connector member comprises a cylindrical thimble having a number of outstanding cars 21, preferably formed by cutting into one end of the member and bending the metaloutwardly, as clearly shown in Fig. 5. Near the opposite end of said male connector member, exterior lugs or projections 22 are provided. The female connector member has outstanding cars 23 at one end similar to those of the male connector member, and at its other end it is enlarged and provided in said enlarged portion with an internal circumferential groove 24. intov which the lugs or projections 22 of the male connector are adapted to be placed, said lugs being passed through notches 25 extending outwardly from said circumferential groove24.

When preparing the exterior wooden member for the pulp or other plastic material, the connector members are applied to the opposite ends of said exterior member, the ears 21 and 23 of said connector members being passed through the notches 17 at the ends of the exterior member until brought into the circumferential groove 16, after which the connector members are given a slight turn to move said ears into said groove to points between said notches 17, thus preventing withdrawal of said connector members from the exterior wooden member.

With the connector members secured- 'to the exterior wooden member a mandrel may be positioned centrally within said last mentioned member, and around said mandrel member is to be placed a sheet of as bestos 26 having circumferential exterior grooves 27 The mandrel of course must be considerably smaller than the exterior wooden member in which. it; isto be positioned, and when the asbestos sheet 26. is

positioned around saidmandrel, an annular intervening space is formed between said asbestos sheet and said exterior wooden member.

With the parts thus described relatively positioned and set on end,,the pulp or other plastic material is directed into said annular space and compressed so that it fills both the circumferential exterior grooves of the asbestos sheet 26 and the circumferential interior grooves of the exterior wooden member 12, the pulp. being allowed to set and being bonded to both said members. The mandrel is then withdrawn lengthwise from the section of covering thus formed, the asbestos sheet 26 remaining thoroughly bonded to the pulp, which latter may be considered as the body portion of the section, said asbestos sheet serving as an interior member.

The interior of the asbestos inner member is provided with longitudinally-arranged corrugated grooves 28, and thrust into the section so as to fit into the asbestos inner member is a thin metallic lining 29. Said lining covers the grooves 26 and thus converts them into air spaces, the ends of the metallic lining 29 being slightly flared, as at 30, so that the sections can be easily placed over the steam or other pipe which they are to cover.

Each of the sections formed as thus described may be suitably covered with tar paper or other similar covering material, the preferred manner of covering the same being in winding strips of tar paper helically around the same from end to end and reversing the trend of the strips each successive layer so as to cross joints between the convolutions and assure a perfectly air and water-tight facing for the section.

Having thus described my invention, what I claim is,-

1. A covering for steam pipes or the like, comprising an exterior wooden member and a body portion formed of pulp or other plastic material molded into said exterior wooden member, the latter serving as both a mold for said pulp or other plastic material and as the outer member of the completed cover said body portion being concealed by said exterior Wooden member.

2. A covering for steam pipes or the like, comprising a cylindrical exterior member formed of thin wooden staves having their longitudinal edges in contact and a body portion formed of pulp or other plastic material molded into said exterior member, the latter serving both as a mold for said body portion and as a cover for the same to conceal said body portion.

3. A covering for steam pipes or the like, comprising an exterior wooden member and a body portion bonded to the interior surface of said exterior wooden member said body portion being wholly concealed by said exterior wooden member.

l. A covering for steam pipes or the like, comprising an exterior wooden member formed of thin staves constructed into cylindrical form, an inner asbestos member, and an intermediate member molded of pulp or other plastic material.

5. A covering for steam pipes or the like, comprising an exterior wooden member formed of thin staves constructed into cylindrical form, an inner asbestos member, and an intermediate member molded of pulp or other plastic material and bonded to said exterior and inner members.

6. A covering for steam pipes or the like,

comprising an exterior wooden member having interior depressions an inner mem ber having exterior depressions, and an intermediate member formed of pulp or other plastic material compressed between said exterior and inner members and bonded into the depressions of the same.

7. A covering for steam pipes or the like, comprising an exterior member constructed of thin Wooden staves, an inner member formed of asbestos, an intermediate member formed of pulp or other plastic material, and a metallic lining fitting into said inner member. I

8. A covering for steam pipes or the like, comprising an exterior wooden member formed of thin staves, an inner asbestos member having depressions in its inner peripheral surface, and an intermediate member of compressed pulp or other plastic ma terial.

9. A covering for steam pipes or the like, comprising an exterior wooden member, an inner asbestos member having depressions formed on its inner surface, a metallic lining fitting into said inner member, and an intermediate member formed of compressed pulp between said exterior and inner members.

10. A covering for steam pipes or the like, comprising an exterior member formed of thin wooden staves having interior depressions, an inner asbestos member hav ing exterior and interior depressions, a pulp or other plastic body portion molded between said exterior and inner members and entering the interior depressions of said exterior member and the exterior depressions of said inner member, and a lining member thrust into said inner member and closing the interior depressions of the latter.

11. A covering for steam pipes or the like, comprising an exterior member constructed of thin wooden staves and provided with a plurality of circumferential grooves, an inner member formed of a sheet of asbestos fashioned into cylindrical formation and provided with circumferential exterior grooves, and pulp compressed between said exterior and inner members so as to enter said circumferential grooves, said pulp serving as an intermediate member, the three members being thus bonded against movement relatively.

12. A covering for steam pipes or the like formed in sections, each section comprising an exterior member, a body portion formed of pulp or other plastic material, and connector members at opposite ends, the connector members being adapted for co-action with mating members of adjoining sections and preventing separation lengthwise of adjoining sections.

13. A covering for steam pipes or the like formed in sections, each section comprising an exterior member formed of thin wooden staves, a body portion formed of pulp, and connector members at opposite ends of the section embedded into the pulp body portion, said connector members being adapted for co -action with mating members of adjoining sections.

lL. A covering for steam pipes or the like constructed in sections, each section comprising an exterior member formed of thin wooden staves, connector members secured to said exterior member, and a body portion of pulp or other plastic material partly embedding said connector members, said conncctor members being adapted for co-action with mating members of adjoining sections.

15. A covering for steam pipes or the like comprising an exterior member formed of thin Wooden staves, a body portion formed of pulp molded into said exterior member, and connector members in the form of metallic thimbles secured to the ends of each section and adapted for co-action with mating connector members of adjoining sections.

16. A covering for steam pipes or the like comprising an exterior member formed of thin wooden staves, said exterior member having a circumferential groove near each end and notches opening outwardly from said groove, metallic connector members of cylindrical formation having outstanding ears adapted to be entered through said notches into said circumferential grooves,

and a body portion of pulp or other plastlc material molded into said exterior member and partly embedding said connector members, said connector members being adapted for co-action with mating members of adjoining sections.

17. A covering for steam pipes or the like formed in sections, each section comprising an exterior member formed of thin wooden staves constructed into cylindrical form, said member having near each end an annular groove and notches opening outwardly from. 7 said annular groove, metalllc connector members at opposite ends of said exterior member having outstanding ears adapted to be entered 1nto said grooves through said notches,

one or" said members having outstanding SIMON SGHMAUS. Witnesses J ACOB' Onnns'r, Jr, EMU. NEUHART.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

